The Swellers have accidentally appeared on a split release with Metallica. As drummer/vocalist Jonathan Diener explains in his blog:

Today we received our test pressings from Paper & Plastick for our new 7" with the songs "Welcome Back Riders" and "Montreal Screwjob"…

Side A was awesome, the song sounded great. Then we flipped it, put the needle on, then heard applause… we didn't have that on our song. Then we hear "I am iron man" …what the fuck?

We then realized, it was Metallica covering the song "Iron Man" by Black Sabbath on both copies of the 7" instead of our song "Montreal Screwjob". We even looked at the etching on the vinyl, one side said the swellers, other had a release listing with MET00 then the number of the release.

The band has two test press copies of the illustriously erroneous 7" (which they are "definitely keeping"), both of which bear a live version of Metallica covering Black Sabbath's "Iron Man" at their Rock and Roll Hall of Fame induction. The band also speculates that, of course, there may be a test pressing Metallica received with a Swellers song on one side.

The Swellers' own 7" in question, Welcome Back Riders, was recently released by Fueled by Ramen / Paper + Plastick. Their FBR debut, Ups and Downsizing, is due out September 29.